Apparatus for treating sewage.



No. 634,458. Patented Oct. 3, [899. n. CAMERON, F. J. commm & A. .1. MARTIN.

APPARATUS FOR TREATING SEWAGE.

(Application filed Dec. 12, 1898.)

(No Model.)

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PATENT DONALD CAMERON, FREDERICK J. OOMMIN, AND ARTHUR J. MARTIN, OF

' EXETER, ENGLAND.

APPARATUS FOR TREATING SEWAGE.

SPECIFICATION forming part of Letters Patent No. 634,428, dated October 3, 1899.

Application filed December 12, 1898. Serial No. 699,056. (No model.)

.J OHN MARTIN, subjects of the Queen of Great Britain, residing at Exeter, in the county of Devon, England, have invented new and useful Improvement-s in Apparatus for the Treatment of Sewage or other Liquids, (for which we have made application for Letters Patent in Great Britain, bearing No. 19,697, dated September 16, 1898, and obtained a French Certificate of Addition, dated May 18, 1898, to Patent No. 264,570, and a Belgian Certificate of Addition, No. 135,680, dated May 18, 1898, to Patent No. 126,675,) of which the following is a specification.

This invention relates to apparatus for the delivery of liquid to chambers or receptacles and its discharge therefrom and is applicable to various processes and operations. It has, however, been specially designed to facilitate the delivery of sewage or sewage effluent to filters and its discharge therefrom and will, hereinafter be described in connection therewith.

Our in vention is illustrated in panying drawings, in which the accoming two supply-valves connected therewith in accordance with our invention. Fig. 2 is an elevation showing the form of discharge-valve is a side elevation of a lever provided with a modified arrangement for causing the gradual closing of the valves.

The main objectof our invention is to cause the discharge-valve of a filter to be opened gradually, so as to avoid the violent outrush which takes place if the valve is suddenly opened to its full extent. In carrying out our invention we render the supply means and the discharge means so far independent of each other as to be operated successively instead of simultaneously, even though both derive their motion from the same apparatus.

Our invention may be applied to filters of which each has an independent apparatus for eifectin g its supply and discharge, and it may also be applied to filters two or more of which have their supply means and discharge means actuated by the same apparatus.

Nhere each filter has an independent apparatus, the supply valve and dischargevalve may be connected to the same lever, in which case the cndsof the valve-rods may be looped over pins fixed in such lever, so that either valve may come to its seat before the downward motion of the pin which carries it is complete and before the other valve begins to open.

For the purpose of causing the motion of the valves to be gradual a dash-pot or dashpots might be used; but our present invention provides an improved means of effecting this. Such means consist in forming the chamber J, in which the actuating-bucket E is hung, as shown in Fig. 3, so as to'retain therein a quantity of liquid, into which the actuating-bucket E shall fall, thus retarding its descent. The liquid displaced by the bucket may remain in the chamber or may be allowed to escape either freely or through a regulating-orifice K, so as to control the rate of descent of the bucket.

Where two filters have their supply means and discharge means actuated by the same apparatus, the supply-valves A and B and the discharge-valves I and 1 may be connected Figure l is a side elevation of a lever hav- Q to one or more levers D- D on the same shaft H or otherwise receive their motion from the actuating bucket or buckets E and F. Said actuating-buckets E and F may, as described in our application for a patent, Serial No. 679,522, filed May 8, 1898, be mounted on the valve-rods carrying the discharge-valves, or they may be carried by a separate lever mounted on the same shaft H. The buckets are actuated by the overflow from a filter or other receptacle or the collecting-well connected therewith, such overflow passing through the pipe L into the bucket E or F to be next actuated. The dischargevalves I and I may, as shown in Fig. 2, have connections without any play, so that they may move during the whole motion of the lever to which they are connected, and the supply-valvesA and B may have looped connections formed by loops 0 on the valve-rods O engaging pins d on the lever D, as shown in Fig. 1, so that they may move duringa part only of the motion of the lever. The effect of such slack connections will be to relieve the valve-lever D of the their motion.

weight of the valve which is closed, so that the weight of the open valve will constitute an unbalanced force tending to change the position of the lever and the apparatus connected therewith, this being the position in which the parts are shown in Fig. 1. Vhen one of the filters is filled and overflows through pipe L, thereby causing the descent of the opposite actuating-bucket (for example, we will say the bucket F) and the opening of its own discharge-valve, such motions instead of being completed at once will be arrested as soon as the supply-valve B, which was open, falls onto its seat, when its weightwill cease to assist that of the liquid in the descending actuating-bucket F, this position being indicated by the broken center line 2 in Fig. 1. The apparatus will remain in the new position until the level of the liquid in the discharge-well of the emptying filter has fallen sufficiently to reduce the pressure on the discharge-valve to the extent necessary to allow the actuating-buckets to continue This motion will be again arrested by the weight of the supply-valve A, which was hitherto closed, when the slack in its connection is taken up (the parts being then in the position indicated by broken center line 3) and will be again resumed and completed when the level of the liquid in the discharge-well has fallen sufficiently, the parts then being in the position indicated by broken line at.

Instead of, as above described, utilizing the weight of the supply-valves A and B for first checking and then aiding the action of the actuating-buckets E and F it will be readily understood that independent weights may be used for this purpose.

A further advantage secured by this improvement in our apparatus when the supply-valves are so used consists in the total stoppage in the supplyof liquid to the filters during the time when both supply-valves A and B are on their seats and the sudden release of the liquid accumulated during such cessation of fiowas soon as one of the supplyvalves A or B is opened.

For the better regulation of the rate of discharge the discharge-valves I and I may, as shown in Fig. 2, be provided with an extension moving within the valve-opening i and coned or otherwise formed so as to constrict the opening to any desired extent in any position of the valve.

lVhat we claim as our invention, and desire to secure by Letters Patent, is-

1. The combination of a plurality of receptacles, valves for cont-rolling the supply and discharge thereto, an actuating-leverfor said valves, and means for forming a slack connection between said valves and lever.

2. The combination ofa receptacle, a valve l l E l i l l for controlling the supply thereto, an actuating-lever for said valve, and a looped valverod connecting said valve with said lever for forming a slack connection therewith.

3. The combination of a receptacle, a valve for controlling the supply thereto, an actuating-lever for said valve provided with a pin, and a valve-rod connected to said valve and provided with a loop adapted to engage said pin thereby forming a slack connection between said valve and lever.

l. The combination of a receptacle, supply and discharge valves therefor, means for actuating said valves, and means for forming a slack connection between said valves and actuating means for closing one valve before the other is opened and vice versa.

5. The combination of a valve, an operating-lever therefor, an actuating-bucket connected with said lever, and means for retard= ing the descent of said bucket, whereby said valve is opened and closed gradually.

6. The combination of a valve, an operating-lever therefor, an actuating-bucket connected with said lever, and a chamber con taining a retarding substance into which said bucket descends thereby controlling the opening and closing of the valve.

7. The combination of a valve, a lever for operating said valve, an actuating-bucket connected with said lever, and a chamber for containing liquid into which said bucket descends, said chamber retaining suflicient liquid to retard the descent of the bucket, thereby causing the valve controlled thereby to be opened and closed gradually.

8. A regulating device comprising a chamber for containing liquid, a valve-actuating bucket hung therein and adapted to descend into said liquid, and means for permitting the escape from said chamber of the liquid displaced by the descent of the bucket.

9. A regulating device comprising a chamber for containing liquid, a valve-actuating bucket hung therein and adapted to descend into said liquid, said chamber having a liquid-escaping orifice for allowing the liquid displaced by the descent of the bucket to pass out of said chamber.

10. The combination of two receptacles, each having a supply and a discharge valve, weights bearing upon the moving parts thereof during the successive stages of their mo tion thereby rendering such motion intermittent, said weights serving to operate said valves automatically.

DONALD CAMERON. FRED. J. COMMIN. ARTHUR .T. MARTIN.

Witnesses:

CHARLES GEAR, ALEX. MATTHEWS. 

